Answer:
x= 17 and y=20
Explanation:
4x- 3y= 8-------1
5x-4y= 5-------2
Subtracting 2 from 1
5x-4y= 5
-4x+3y=-8
x-y=-3----------3
From 3 we have x= y-3-------4
Putting 4 in 1
4(y-3) -3y= 8
4y - 12 -3y= 8
y= 8+12
y=20------------5
Putting 5 in 2
5x - 4(20)= 5
5x=5+80
5x= 85
x= 17------6